Claude Code

Developer Tools

Anthropic's agentic coding tool for the terminal, IDE and web.

Latest v2.1.233 · by AnthropicWebsiteanthropics/claude-code

Release activity

Release activity — 22 releases across 19 days since Jul 14, 2026. Each cell is one day; darker means more releases that day. Nothing is recorded before Jul 14, 2026. Older weeks are hidden at this screen width.
MayJunJulAug
Sunday1 release on Jul 19, 2026No releases on Jul 26, 2026No releases on Aug 2, 2026No releases on Aug 9, 2026No releases on Aug 16, 2026
Monday1 release on Jul 20, 2026No releases on Jul 27, 2026No releases on Aug 3, 20261 release on Aug 10, 2026No releases on Aug 17, 2026
Tuesday1 release on Jul 14, 20261 release on Jul 21, 2026No releases on Jul 28, 20262 releases on Aug 4, 20261 release on Aug 11, 2026
Wednesday1 release on Jul 15, 20261 release on Jul 22, 2026No releases on Jul 29, 2026No releases on Aug 5, 20261 release on Aug 12, 2026
ThursdayNo releases on Jul 16, 2026No releases on Jul 23, 2026No releases on Jul 30, 20261 release on Aug 6, 20262 releases on Aug 13, 2026
Friday1 release on Jul 17, 20261 release on Jul 24, 2026No releases on Jul 31, 20261 release on Aug 7, 20261 release on Aug 14, 2026
Saturday1 release on Jul 18, 20261 release on Jul 25, 2026No releases on Aug 1, 20262 releases on Aug 8, 2026No releases on Aug 15, 2026

22 releases since Jul 14, 2026, busiest day 2

Changelog

v2.1.233

Latest
Added 4
  • Add GitLab merge request URL support to the --worktree flag and the claude agents view where MRs display as !N
  • Add opt-in forward_user_identity apps gateway setting on Anthropic upstreams that sends the signed-in user's identity as headers for per-user spend attribution
  • Add opt-in memory cgroup support for Bash tool commands on Linux via CLAUDE_CODE_TOOL_MEMORY_LIMIT environment variable to prevent runaway builds from stalling sessions
  • Add CLAUDE_CODE_WEBFETCH_CACHE_TTL_MS environment variable to configure the WebFetch session URL cache TTL with a default of 15 minutes
Changed 6
  • Improve claude self-hosted-runner session start time by creating the session branch without rewriting the working tree and eliminating two server round trips that blocked the agent's launch
  • Improve apps gateway error forwarding so 400/413 errors from Vertex, Foundry, and Claude Platform on AWS upstreams carry the upstream's own message and fix a bug with auto-compact on apps gateway
  • Improve claude plugin validate to check a bare .claude/skills directory and report SKILL.md files whose frontmatter fails to parse
  • Improve screen reader mode so the /effort selector renders as a numbered list with a typed-number prompt and hint and dialog text is no longer clipped
  • Improve print mode diagnostics by writing a [claude-code:unrecognized_model] line to stderr when a request goes out for a model ID Claude Code doesn't recognize and mapping it with modelOverrides to silence
  • Change the GitHub app setup tip to no longer appear in repositories whose origin remote is on gitlab.com or bitbucket.org and make the enterprise marketplace tip cover non-GitHub internal git hosts
Fixed 9
  • Fix cloud sessions occasionally being marked as lost when the environment shut down while Claude was waiting on a permission prompt
  • Fix MCP v2 connections endlessly reopening the subscriptions/listen stream against servers that terminate long-held streams on a fixed timeout
  • Fix Notification hooks not firing for permission prompts when running under Claude Desktop or VS Code
  • Fix idle sessions on Linux sometimes keeping one CPU core at 100% when sandboxing is enabled
  • Fix bundled skill aliases like /checkup and /review reporting Unknown command in -p mode or with plugins/MCP loaded when a user or project skill shadows the bundled skill
  • Fix skill/command argument substitution to prevent argument values from being re-expanded as template markers
Removed 1
  • Remove todo/task-tracking tools (TaskCreate/Get/Update/List, TodoWrite) on Opus 4.8, Sonnet 5, Fable 5, Mythos 5, and newer models unless CLAUDE_CODE_ENABLE_TODO_TOOLS=1 is set
What's changed
  • Added GitLab merge request URL support to the --worktree flag and the claude agents view (where MRs display as !N)
  • Added an opt-in forward_user_identity apps gateway setting on Anthropic upstreams that sends the signed-in user's identity as headers, so a proxy behind the gateway can attribute spend per user
  • Added opt-in memory cgroup support for Bash tool commands on Linux (CLAUDE_CODE_TOOL_MEMORY_LIMIT) so a runaway build can't stall the session
  • Added CLAUDE_CODE_WEBFETCH_CACHE_TTL_MS environment variable to configure the WebFetch session URL cache TTL (default unchanged: 15 minutes)
  • Fixed cloud sessions occasionally being marked as lost when the environment shut down while Claude was waiting on a permission prompt
  • Fixed MCP v2 connections endlessly reopening the subscriptions/listen stream against servers that terminate long-held streams on a fixed timeout (e.g. serverless hosts)
  • Fixed Notification hooks not firing for permission prompts when running under Claude Desktop or VS Code
  • Fixed idle sessions on Linux sometimes keeping one CPU core at 100% when sandboxing is enabled
  • Fixed bundled skill aliases like /checkup and /review reporting "Unknown command" in -p mode or with plugins/MCP loaded when a user or project skill shadows the bundled skill
  • Fixed skill/command argument substitution to prevent argument values from being re-expanded as template markers
  • Fixed Windows paths spelled with the NT \??\ device prefix bypassing UNC path validation, closing an NTLM credential-leak vector
  • Improved claude self-hosted-runner session start time: the session branch is now created without rewriting the working tree, and two server round trips no longer block the agent's launch
  • Improved apps gateway error forwarding: 400/413 errors from Vertex, Foundry, and Claude Platform on AWS upstreams now carry the upstream's own message; fixes a bug with auto-compact on apps gateway
  • Improved claude plugin validate to check a bare .claude/skills directory, reporting SKILL.md files whose frontmatter fails to parse
  • Improved screen reader mode: the /effort selector renders as a numbered list with a typed-number prompt, and hint and dialog text is no longer clipped
  • Improved print mode diagnostics: a [claude-code:unrecognized_model] line is written to stderr when a request goes out for a model ID Claude Code doesn't recognize; map it with modelOverrides to silence
  • Changed the GitHub app setup tip to no longer appear in repositories whose origin remote is on gitlab.com or bitbucket.org; the enterprise marketplace tip now covers non-GitHub internal git hosts
  • Todo/task-tracking tools (TaskCreate/Get/Update/List, TodoWrite) are no longer available on Opus 4.8, Sonnet 5, Fable 5, Mythos 5, and newer models; set CLAUDE_CODE_ENABLE_TODO_TOOLS=1 to bring them back
  • Windows: fixed auto mode repeatedly stopping for manual approval on ordinary cd <dir> && <command> > file Bash commands (a 2.1.232 regression)
  • Reverted the 2.1.232 Bash permission changes for Cygwin-style symlinks on Windows and for input redirections (< file); a narrower version will return in a later release
View originalPermalink
How v2.1.233 went

v2.1.232

Added 5
  • Type @ in the prompt to mention another Claude session by name, with Claude using SendMessage to reach that session directly
  • Added /config rows for Dialog expiry and Messages from your other sessions with cross-session inbound accept/hold/refuse options
  • Added secret redaction for GitLab token families and full redaction of routable glpat-/gldt- tokens, with glab CLI config store receiving sandbox and credential-path protection like gh
  • Added GitLab support to plugin marketplaces with bare gitlab.com repo URLs cloning like github.com URLs
  • Fable 5 is offered as an advisor in /advisor again for organizations with Fable access with usage-credits consent through /model fable
Changed 6
  • Subagent forking is now on by default, with fork-type subagents inheriting the full conversation and prompt cache, and non-teammate agent spawns in interactive sessions running in the background by default
  • SendMessage now delivers to a bare name that exactly matches one live session instead of asking to confirm with a ref first
  • Interactive sessions on one machine now keep unique names by giving name conflicts a name-word-word variant
  • Settings additionalMarketplaces and allowedMarketplaces are now accepted as friendlier aliases for extraKnownMarketplaces and strictKnownMarketplaces
  • Enterprise policy blockedMarketplaces entries now keep blocking bare repo URLs when the CLI classifies them as git clones
  • Gateway desktop overlay now accepts every released Desktop setting validated at boot against Desktop's schema, with unknown or invalid keys failing boot
Fixed 9
  • Fixed empty managed.policies[].match.groups/admin.admin_groups entries and malformed email_domain values now failing at boot instead of silently matching no one or granting admin access
  • Fixed a PowerShell permission bypass where variable-writing parameters could silently overwrite $PSDefaultParameterValues and redirect later commands' file access
  • Fixed a Windows permission bypass where Git Bash followed Cygwin-style symlinks that path validation saw as regular files
  • Fixed nested git repositories inheriting trust from a parent directory; each repository now requires its own trust confirmation
  • Fixed MCP connections hanging for the full 30-second connect timeout when a server fails to answer or sends a malformed reply to the protocol-version probe
  • Fixed Remote Control sessions hosted by a bridge inside a cloud session inheriting that session's transcript or credentials
What's changed
  • Subagent forking is now on by default: a subagent_type: "fork" subagent inherits the full conversation and prompt cache, and non-teammate agent spawns in interactive sessions now run in the background by default
  • Type @ in the prompt to mention another Claude session by name; Claude then uses SendMessage to reach that session directly
  • SendMessage now delivers to a bare name that exactly matches one live session, instead of asking to confirm with a ref first
  • Interactive sessions on one machine now keep unique names: starting or renaming a session to a name another live session already uses gives it a name-word-word variant and tells you
  • Added /config rows for "Dialog expiry" and "Messages from your other sessions" (cross-session inbound accept/hold/refuse)
  • Added secret redaction for GitLab token families (glrt-, gloas-, glptt-, glagent-, glimt-, glsoat-, glcbt-, glft-, glffct-) and full redaction of routable glpat-/gldt- tokens; the glab CLI config store gets the same sandbox and credential-path protection as gh
  • Added GitLab support to plugin marketplaces: bare gitlab.com repo URLs (including nested subgroups) now clone like github.com URLs, and clone auth-failure hints name your actual git host
  • Settings: additionalMarketplaces and allowedMarketplaces are now accepted as friendlier aliases for extraKnownMarketplaces and strictKnownMarketplaces
  • Enterprise policy: a url-typed blockedMarketplaces entry for a bare repo URL keeps blocking that URL when the CLI classifies it as a git clone
  • Gateway: the desktop: overlay now accepts every released Desktop setting (was 11 hand-listed keys), validated at boot against Desktop's own schema; unknown or invalid keys fail boot
  • Gateway: empty managed.policies[].match.groups/admin.admin_groups entries and malformed email_domain values (empty, or containing @, whitespace, or commas) now fail at boot instead of silently matching no one or granting admin access
  • Fable 5 is offered as an advisor in /advisor again for organizations with Fable access, with usage-credits consent set up through /model fable
  • Fixed a PowerShell permission bypass where variable-writing parameters could silently overwrite $PSDefaultParameterValues and redirect later commands' file access
  • Fixed a Windows permission bypass where Git Bash followed Cygwin-style symlinks that path validation saw as regular files; writes through them now require permission approval
  • Fixed nested git repositories inheriting trust from a parent directory; each repository now requires its own trust confirmation
  • Fixed MCP connections hanging for the full 30-second connect timeout when a server fails to answer or sends a malformed reply to the protocol-version probe
  • Fixed Remote Control sessions hosted by a bridge inside a cloud session inheriting that session's transcript or credentials
  • Fixed Remote Control sessions started from Claude Desktop or an IDE appearing as a new claude.ai session each time the local session was resumed; they now reattach to the existing one
  • Fixed Remote Control sessions appearing unreachable to newly attached clients while idle
  • Fixed Remote Control bridge sessions not restoring conversation history when the session worker restarts
  • Remote Control: resuming a conversation whose session was deleted from claude.ai or the app now starts a replacement instead of failing with a message about your login (regressed in v2.1.227)
  • Fixed Cloud gateway /login exiting silently or leaving an unresponsive terminal after "Press Enter to continue" when managed settings failed to load; the reason is now shown
  • Fixed voice mode on native builds getting stuck on "listening…" when the voice service rejected the connection; the rejection is now shown immediately
  • Fixed mTLS client certificate rotation requiring a restart; Claude Code now reloads the rotated cert and key automatically on connection errors
  • Fixed malformed AWS or Vertex region values being used to build request URLs; they now fall back to the default region
  • Fixed stream idle timeout errors failing the request instead of recovering on Bedrock, Vertex, and gateway deployments
  • Fixed content-sized overlays containing truncated text rendering one column too wide, and start-truncated text collapsing to an ellipsis
  • Fixed a stray garbled character where a long shell-command or agent-description preview was cut off mid-emoji
  • Fixed a startup race that could silently unregister a plugin marketplace due to concurrent writes to known_marketplaces.json
  • Fixed /update and /tui refusing to restart while work that survives the relaunch was running
  • Fixed usage-limit guidance suggesting unavailable slash commands in SDK and remote sessions
  • Fixed the consent message for interactive --advisor fable launches, which told you to run /model fable in an interactive session that had just exited
  • Improved fullscreen streaming: long sessions stay responsive because the whole conversation is no longer re-normalized on every update
  • Improved the managed settings approval dialog: shows endpoint URLs, uses clearer wording for telemetry-only changes, skips routine OpenTelemetry options, and requires approval for server-managed sandbox binary overrides (sandbox.bwrapPath, sandbox.socatPath, sandbox.ripgrep)
  • /feedback and /bug now open immediately when invoked while Claude is responding, instead of waiting for the turn to finish
  • /plugin install plugin@marketplace now refreshes the marketplace first, so newly published plugins install without a manual marketplace update
  • /code-review at high, xhigh, and max effort now runs in a background agent like the other levels
  • Pasted and clipboard images are read without blocking the event loop
  • Remote Control now keeps reconnecting for about 30 minutes after a network blip and no longer drops after a few blips spread across an hour
  • Remote Control: resuming a conversation no longer silently takes Remote Control away from another Claude Code on the same machine that still has it; run /remote-control there to move it
  • Updated agent panel: completed subagents hide immediately with a /tasks footer hint, and the "↓ N more" overflow indicator moved left for visibility
  • Remote Control: the terminal now says whether a session was taken over by another device, ended from another app, or deleted, and stops suggesting a reconnect that would undo it
  • Bash input redirections (< file) are now permission-checked like their argument spellings on all platforms
  • Shortened the message shown when resuming a completed background agent
  • Cowork sessions no longer inline external @-imports from user-scope memory files
  • Hardened the auto-generated cross-session messaging socket directory on shared /tmp: a pre-planted symlink or another user's directory is now refused instead of used
  • Hardened the Linux filesystem sandbox against a protected-path bypass
  • Changed sandbox.ripgrep to be honored only from user, managed, and --settings settings; project settings can no longer override the sandbox's ripgrep binary
  • Removed the startup tip suggesting you create custom subagents, and the matching nudge in the /powerup tour
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How v2.1.232 went

v2.1.231

Fixed 1
  • MCP OAuth sign-in failing with a redirect URI mismatch for servers that use a pre-registered OAuth client, such as Slack
What's changed
  • Fixed MCP OAuth sign-in failing with a redirect URI mismatch for servers that use a pre-registered OAuth client, such as Slack
View originalPermalink
How v2.1.231 went

v2.1.229

Added 4
  • Documented `claude remote-control --continue` for resuming the most recent Remote Control session
  • Added server-supplied Claude Code hook support for self-hosted runner sessions, matching managed-environment behavior
  • Added SSE keepalive pings to gateway streaming responses during long thinking pauses, preventing idle-timeout disconnects on Vertex and Bedrock upstreams
  • Added plugin marketplace `command` sources: a local command (e.g. an IDE) prints the plugin directory, which is re-resolved each session and applied without a restart; `mode: "link"` uses it in place
Changed 1
  • `ListAgents` now marks disconnected Remote Control sessions as `offline` and labels your cloud sessions as `cloud`
Fixed 14
  • Fixed long responses partly disappearing while streaming and being printed twice in the terminal
  • Fixed a crash to the error screen (including on `--resume` of the affected session) when a tool call had a non-string `glob`, `file_path`, or `command` value
  • Fixed a RangeError crash when a progress bar or markdown table rendered in a very narrow terminal window (could also crash `claude --continue`/`--resume` at startup)
  • Fixed a crash on Windows when a tool call or message referenced a file by an extended-length (`\\?\`) or UNC path
  • Fixed auto mode failing on every tool call for users who disable the attribution header via `CLAUDE_CODE_ATTRIBUTION_HEADER` (direct Anthropic API connections)
  • Fixed `/model` rejecting Sonnet/Opus 1M for claude.ai subscribers using a custom `ANTHROPIC_BASE_URL` gateway
What's changed
  • Documented claude remote-control --continue for resuming the most recent Remote Control session
  • Added server-supplied Claude Code hook support for self-hosted runner sessions, matching managed-environment behavior
  • Added SSE keepalive pings to gateway streaming responses during long thinking pauses, preventing idle-timeout disconnects on Vertex and Bedrock upstreams
  • Added plugin marketplace command sources: a local command (e.g. an IDE) prints the plugin directory, which is re-resolved each session and applied without a restart; mode: "link" uses it in place
  • ListAgents now marks disconnected Remote Control sessions as offline and labels your cloud sessions as cloud
  • Fixed long responses partly disappearing while streaming and being printed twice in the terminal
  • Fixed a crash to the error screen (including on --resume of the affected session) when a tool call had a non-string glob, file_path, or command value
  • Fixed a RangeError crash when a progress bar or markdown table rendered in a very narrow terminal window (could also crash claude --continue/--resume at startup)
  • Fixed a crash on Windows when a tool call or message referenced a file by an extended-length (\\?\) or UNC path
  • Fixed auto mode failing on every tool call for users who disable the attribution header via CLAUDE_CODE_ATTRIBUTION_HEADER (direct Anthropic API connections)
  • Fixed /model rejecting Sonnet/Opus 1M for claude.ai subscribers using a custom ANTHROPIC_BASE_URL gateway
  • Fixed MCP OAuth with strict authorization servers by using 127.0.0.1 instead of localhost in the redirect URI
  • Fixed Remote Control clients showing a stuck working spinner after a slash command typed in the laptop terminal
  • Fixed the Claude Code Review workflow generated by /install-github-app completing without posting its review on the pull request
  • Fixed multi-second UI stalls after editing a file with thousands of IDE diagnostics while the IDE extension is connected
  • Fixed one-shot claude plugin commands leaving a stray liveness file that could prevent cleanup of outdated plugin versions
  • Fixed dynamic workflows inside CPU-limited containers using the host machine's core count instead of the container's CPU limit
  • Fixed a file-watcher handle leak after atomic file replacements, and an uncaught error on Windows when the scheduled-tasks watcher failed on a network or virtual filesystem
  • Fixed SDK and --input-format stream-json sessions getting a 400 API error when a whitespace-only message was submitted
  • Fixed conversations whose messages alone exceed the API's 32 MB request limit retrying compaction when no images or documents can be stripped; they now fail once with a clear message
  • Fixed OpenTelemetry export from Claude Desktop sessions being rejected by the Desktop-managed gateway when that gateway is also the telemetry endpoint
  • Fixed self-hosted runner and other remote sessions exiting at startup when managed-mcp.json is deployed and the server delivers MCP servers; those servers are now skipped with a warning
  • Fixed self-hosted runner repository preparation hanging on a Git Credential Manager prompt; git now fails fast when credentials are missing
  • Improved workflow fan-outs to stagger same-prefix sibling agents so subsequent agents read the cached prompt prefix instead of re-paying it (CLAUDE_CODE_WORKFLOW_PREFIX_STAGGER_MS=0 disables)
  • Improved "prompt is too long" errors to explain why automatic compaction could not recover instead of only suggesting /compact
  • Improved sandbox: IPv6 literals in network domain lists are now bracketed ([::1]:443), and ambiguous spellings are enforced fail-closed and flagged by /doctor
  • Updated /login to repeat the CLAUDE_CODE_OAUTH_TOKEN override warning after a successful login
  • Changed /commit-push-pr so git/gh commands with dangerous flags (--force, --amend, --no-verify, etc.) are no longer auto-approved
  • Changed self-hosted runner Windows startup to require an explicit --base-dir; there is no default checkout directory on Windows
  • [VSCode] "Report a problem" and /bug now open the built-in feedback dialog instead of a retired survey link
  • [VSCode] Made the /btw side-question panel resizable by dragging its boundary, in both side-docked and stacked layouts
  • [VSCode] Added session groups in the sidebar — right-click to create, rename, or delete; Cmd/Ctrl- or Shift-click to move several sessions at once
View originalPermalink
How v2.1.229 went

v2.1.228

Changed 5
  • Improved cross-session messages so the sender and body now display inline instead of a collapsed line, and messages to Remote Control sessions on other machines show your Remote Control session name as the sender
  • Improved Vertex AI credential handling so expired or missing Google Cloud credentials now fail within seconds instead of retrying for minutes
  • Improved compaction progress so the retry countdown and stall hint now appear during compaction instead of only a progress bar
  • Updated terminal title busy-spinner glyphs to reduce tab-bar jitter on some terminals
  • Changed the Write tool so newer models can overwrite an existing file they haven't read this session, matching the Edit tool's rules; older models still require the read first
Fixed 11
  • Fixed interactive sessions that could stop redrawing entirely while the process kept running after a rare internal layout error
  • Fixed git / Git Bash not being found on Windows when Claude Code is launched from a parent folder of the git installation
  • Fixed /tui reverting the session to an earlier model when /model had been changed since the last response
  • Fixed cross-session messaging sometimes starting without an inbox in the first session after install or upgrade
  • Fixed Remote Control /resume while connected leaking the resumed conversation's title or history into the connected session
  • Fixed claude self-hosted-runner sessions failing on every fresh runner when the checkout hook fails for a repository the session doesn't push to; that repository is now skipped with a warning
Removed 1
  • Removed the outdated note about auto mode sessions costing slightly more from the first-use notice for Pro, Max, and Team plans
Security 1
  • Hardened skills synced from claude.ai so they no longer shadow local commands or MCP prompts, their descriptions are sanitized and labeled, and on your machine their bodies don't run ! commands or expand @ files
What's changed
  • Fixed interactive sessions that could stop redrawing entirely, while the process kept running, after a rare internal layout error
  • Fixed git / Git Bash not being found on Windows when Claude Code is launched from a parent folder of the git installation
  • Fixed /tui reverting the session to an earlier model when /model had been changed since the last response
  • Fixed cross-session messaging sometimes starting without an inbox in the first session after install or upgrade
  • Fixed Remote Control /resume while connected leaking the resumed conversation's title or history into the connected session
  • Fixed claude self-hosted-runner sessions failing on every fresh runner when the checkout hook fails for a repository the session doesn't push to; that repository is now skipped with a warning
  • Fixed self-hosted runners ending sessions in the gap between a background task finishing and the follow-up turn starting
  • Fixed session cleanup deleting contents inside a project's memory folder
  • Fixed background plugin-cache cleanup deleting a plugin's cache when its only version is a symlinked development checkout
  • Fixed a settings-merge issue where a marketplace entry redefined in a higher-precedence settings tier could inherit another tier's custom headers; marketplace entries now merge as whole entries
  • Fixed the deferred-tools reminder occasionally being sent to the model twice after a skill invocation
  • Hardened skills synced from claude.ai: they no longer shadow local commands or MCP prompts, their descriptions are sanitized and labeled, and on your machine their bodies don't run ! commands or expand @ files
  • Improved cross-session messages: the sender and body now display inline instead of a collapsed line, and messages to Remote Control sessions on other machines show your Remote Control session name as the sender
  • Improved Vertex AI credential handling: expired or missing Google Cloud credentials now fail within seconds instead of retrying for minutes
  • Improved compaction progress: the retry countdown and stall hint now appear during compaction instead of only a progress bar
  • Updated terminal title busy-spinner glyphs to reduce tab-bar jitter on some terminals
  • Changed the Write tool so newer models can overwrite an existing file they haven't read this session, matching the Edit tool's rules; older models still require the read first
  • Removed the outdated note about auto mode sessions costing slightly more from the first-use notice for Pro, Max, and Team plans
View originalPermalink
How v2.1.228 went

v2.1.227

Changed 2
  • Slash-command menu now marks only the selected row in blue, bolds matched characters instead of recoloring them, and preserves emoji and accented name glyphs
  • Performance improved with fewer event-loop stalls on file-not-found suggestions and at-mention size checks
Fixed 3
  • Feature flags are now evaluated with the user's subscription tier when a session starts with an expired login token, preventing Max plan users from being wrongly prompted to enable usage credits for Fable
  • Bash commands under claude-code-action no longer fail with allowed_non_write_users on GitHub-hosted runners
  • The /tui command no longer brings back a conversation that had been rewound to before its first message
What's changed
  • Fixed feature flags being evaluated without the user's subscription tier when a session started with an expired login token, which could wrongly prompt Max plan users to enable usage credits for Fable
  • Fixed every Bash command failing under claude-code-action with allowed_non_write_users on GitHub-hosted runners
  • Fixed /tui bringing back a conversation that had been rewound to before its first message
  • Improved slash-command menu: blue now marks only the selected row, matched characters are bolded instead of recolored, and emoji or accented names keep their glyphs
  • Improved performance: fewer event-loop stalls on file-not-found suggestions and at-mention size checks
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How v2.1.227 went

v2.1.226

What's changed
  • Bug fixes and reliability improvements
View originalPermalink
How v2.1.226 went

v2.1.225

Added 3
  • Added gateway spend-limit support to Claude Code's usage warning; the limit-reached message now names the cap, its reset time, and the operator's message
  • Added a workspace trust prompt to `claude agents` for untrusted directories, matching the behavior of `claude`
  • SendMessage can now start a conversation with your Remote Control sessions on other machines by name (`ListAgents` shows them as `name [ref]`), instead of only replying after they message you first
Changed 1
  • Improved Remote Control: photos attached from the Claude app are now shown to Claude directly instead of being read from disk with a separate tool call
Fixed 10
  • Fixed a transient 401 replacing a long-lived `CLAUDE_CODE_OAUTH_TOKEN` with a stored login's short-lived token, breaking headless sessions until restart
  • Fixed MCP OAuth servers on macOS intermittently failing with a burst of 401 errors, as if never authenticated, after a keychain read timed out
  • Fixed auto mode counting a safety-filter refusal of its own permission check toward the consecutive-block limit; the action is still denied, but the model is now told to move on rather than retry
  • Fixed cross-session messages staying parked without a notice or expiry in headless sessions and during startup
  • Fixed conversation history breaking on Remote Control session resume after very large conversations were compacted
  • Fixed hovering over a session in another project in the agents list changing the directory the next agent starts in
What's changed
  • Added gateway spend-limit support to Claude Code's usage warning; the limit-reached message now names the cap, its reset time, and the operator's message (requires the gateway on 2.1.225)
  • Added a workspace trust prompt to claude agents for untrusted directories, matching the behavior of claude
  • Fixed a transient 401 replacing a long-lived CLAUDE_CODE_OAUTH_TOKEN with a stored login's short-lived token, breaking headless sessions until restart
  • Fixed MCP OAuth servers on macOS intermittently failing with a burst of 401 errors, as if never authenticated, after a keychain read timed out
  • Fixed auto mode counting a safety-filter refusal of its own permission check toward the consecutive-block limit; the action is still denied, but the model is now told to move on rather than retry
  • Fixed cross-session messages staying parked without a notice or expiry in headless sessions and during startup
  • Fixed conversation history breaking on Remote Control session resume after very large conversations were compacted
  • Fixed hovering over a session in another project in the agents list changing the directory the next agent starts in
  • Fixed claude self-hosted-runner registering and then failing every session when --base-dir cannot be created or written; it now exits at startup with a clear error
  • Fixed Claude Code on the web sessions being misreported as stuck, re-sending a growing event backlog on every reconnect
  • Improved Remote Control: photos attached from the Claude app are now shown to Claude directly instead of being read from disk with a separate tool call
  • [VSCode] Fixed Focus view folding away the latest to-do list, a pending question's context, and settled answers; thinking-only folds show "Thought for Ns" and re-collapse when their turn completes
  • SendMessage can now start a conversation with your Remote Control sessions on other machines by name (ListAgents shows them as name [ref]), instead of only replying after they message you first
  • SendMessage: a Remote Control recipient you already confirmed is never swapped for a same-named session on this machine when its own list couldn't be checked
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How v2.1.225 went

v2.1.224

Added 7
  • Added self-hosted environments with `claude self-hosted-runner` to turn your own machines or containers into a place Claude Code web, mobile, and desktop sessions can run, on Team and Enterprise plans
  • Added `archive` plugin source to install plugins from a zip over HTTPS without git or npm, with optional SHA-256 pinning
  • Added a cancel-and-confirm step when removing an unavailable paste changes a command's text
  • Added `ANTHROPIC_BEDROCK_REGION_PREFIX` env var for Bedrock to prefer a specific cross-region inference profile over the `AWS_REGION`-derived one
  • Added `crossSessionInbound` and `dialogExpiry` settings for cross-session messages to be held for approval or auto-delivered
  • Added sandbox credential-masking options including `extract` and `onExtractNoMatch` for structured env values, `decode: "jwt"` with `maskClaims` for JWT-aware masking, and `awsPairs`/`sigv4` for AWS SigV4 re-signing
  • Added cross-session `SendMessage` to allow Claude Code sessions to message each other with `ListAgents` to discover them on macOS and Linux
Changed 6
  • Improved fullscreen mode to keep the full pre-compaction history in scrollback across repeated compactions
  • Improved Remote Control with attached web and mobile clients now seeing compaction progress and the post-compaction boundary instead of a silent pause
  • Improved Remote Control connection failures to show a persistent failure indicator with details and a reconnect shortcut
  • Changed managed settings so the approval prompt no longer re-appears after re-login or org switching when the organization's settings are unchanged
  • Changed the feedback-survey transcript share to also upload the last request's model settings including system prompt and tool definitions
  • Changed the Bash tool description to always note that command output is displayed to the model, not reliably to the user
Fixed 14
  • Fixed long (>200 char) project paths resolving to another project's session directory under a shared sanitized prefix
  • Fixed `SendMessage` reporting "Message sent" when the write to a teammate's inbox had actually failed
  • Fixed sandbox filesystem deny entries written with a trailing slash being silently bypassable on Linux and macOS
  • Fixed sandbox violation details never appearing in Bash tool results
  • Fixed MCP tools that connect mid-turn being deferred for tool search without their names announced to the model
  • Fixed plugin install records being silently corrupted when the same plugin is installed in multiple projects
Removed 1
  • Removed the 200-subagent-per-session spawn cap so long-running sessions no longer refuse new agents
What's changed
  • Added self-hosted environments: claude self-hosted-runner turns your own machines or containers into a place Claude Code web, mobile, and desktop sessions can run, on Team and Enterprise plans
  • Added archive plugin source: install plugins from a zip over HTTPS without git or npm, with optional SHA-256 pinning
  • Added a cancel-and-confirm step when removing an unavailable paste changes a command's text
  • Added ANTHROPIC_BEDROCK_REGION_PREFIX env var for Bedrock to prefer a specific cross-region inference profile over the AWS_REGION-derived one
  • Added crossSessionInbound and dialogExpiry settings: cross-session messages sent to a session running with bypassed permissions are held for your approval, and messages to other sessions auto-deliver
  • Added sandbox credential-masking options: extract and onExtractNoMatch for structured env values, decode: "jwt" with maskClaims for JWT-aware masking, and awsPairs/sigv4 for AWS SigV4 re-signing; these need network.tlsTerminate and are honored only from user, managed, or --settings settings
  • Added cross-session SendMessage: Claude Code sessions can now message each other, on any of your machines, with ListAgents to discover them (macOS and Linux)
  • Fixed long (>200 char) project paths resolving to another project's session directory under a shared sanitized prefix; session list, rename, fork, delete and /resume no longer cross projects
  • Fixed SendMessage reporting "Message sent" when the write to a teammate's inbox had actually failed; failed deliveries are now reported as errors
  • Fixed sandbox filesystem deny entries written with a trailing slash (e.g. denyRead: "~/.aws/") being silently bypassable on Linux and macOS
  • Fixed sandbox violation details never appearing in Bash tool results; Claude now sees which file or network access was denied and why
  • Fixed MCP tools that connect mid-turn being deferred for tool search without their names announced to the model
  • Fixed plugin install records being silently corrupted when the same plugin is installed in multiple projects
  • Fixed recalled or restored paste content occasionally attaching wrong data or silently losing text when the paste had aged out or placeholder numbers collided
  • Fixed copy-on-select on Wayland sometimes not reaching the clipboard; the two selection writes no longer race
  • Fixed the feedback survey's transcript share silently failing on long sessions; a failed share now shows an error instead of a success message
  • Fixed Remote Control auto-start intermittently failing with "Remote credentials fetch failed" on a cold start with a stale login token
  • Fixed Remote Control and SDK clients showing a blank "(no content)" message after /clear and other output-less commands
  • Fixed a Remote Control session recreated after its server session expired uploading prior local conversation history into the new session
  • Improved fullscreen mode to keep the full pre-compaction history in scrollback across repeated compactions, instead of only the most recent interval
  • Improved Remote Control: attached web and mobile clients now see compaction progress and the post-compaction boundary instead of a silent pause; /clear resets now propagate to attached clients
  • Improved Remote Control: connection failures now show a persistent failure indicator with details and a reconnect shortcut, instead of only an 8-second toast
  • Removed the 200-subagent-per-session spawn cap; long-running sessions no longer refuse new agents (concurrency and depth limits still apply)
  • Changed managed settings: the approval prompt no longer re-appears after re-login or org switching when the organization's settings are unchanged
  • Changed the feedback-survey transcript share: with your consent it now also uploads the last request's model settings — the system prompt (which includes your CLAUDE.md instructions), tool definitions, and model parameters. Secrets are redacted as before, and these fields are dropped first if the share is too large
  • Changed the Bash tool description to always note that command output is displayed to the model, not reliably to the user
  • Changed recalled paste placeholder numbers to renumber when accepted into the input
  • Changed Remote Control to archive the stale server session instead of leaving a dead one listed when a fresh session is minted after compaction or /resume
  • [VSCode] Fixed the extension showing Remote Control as connected after the connection failed
  • Fixed a session resume silently reconnecting Remote Control after the user turned it off (--resume, SDK hosts, and the VS Code extension)
  • [VSCode] Fixed sessions not honoring remoteControlAtStartup when explicitly enabled
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How v2.1.224 went

v2.1.223

Added 3
  • Added owner wildcard entries ("owner/*") to the strictKnownMarketplaces and blockedMarketplaces managed settings for allowing or blocking all marketplace repos under a GitHub org
  • Added a warning when workflow agents, forked skills, slash commands, or resumed background agents' requested subagent model is restricted and the parent model runs instead
  • Added a /teleport hint in cloud sessions showing how to continue locally with claude --teleport <session id>
Changed 4
  • Changed CLAUDE_CODE_DISABLE_1M_CONTEXT to hold every Claude model with a native 1M window to 200K via auto-compaction, not just a fixed list; a startup warning now appears when auto-compaction isn't holding the session to 200K
  • Changed auto-compact to keep sessions on unrecognized model IDs within the assumed context window instead of letting them grow past it; set CLAUDE_CODE_DISABLE_UNKNOWN_MODEL_WINDOW_ENFORCEMENT=1 to restore the previous behavior
  • Changed /review to be an alias of /code-review, which reviews the current diff or a PR (/code-review <level> <pr#>); use /code-review ultra for a deep cloud review
  • Changed /code-review with no effort level to reuse the level you typed last; type a level like /code-review high to change it
Fixed 12
  • Fixed a Bash permission bypass where a crafted command could hide parts of itself from permission checks
  • Fixed permission prompts so commands padded with tabs or invisible Unicode can no longer hide part of the command from the approval dialog
  • Fixed workflow scripts being able to use dynamic import() to run code outside the workflow sandbox
  • Fixed a permission gap where an agent definition's bypassPermissions mode ignored the org bypass-permissions disable policy
  • Fixed resuming a session after a mid-session /cd coming back empty
  • Fixed gateway model discovery hiding Claude models registered under provider-prefixed IDs such as vertex_ai/claude-* or bedrock/anthropic.claude-*
What's changed
  • Added owner wildcard entries ("owner/*") to the strictKnownMarketplaces and blockedMarketplaces managed settings for allowing or blocking all marketplace repos under a GitHub org
  • Added a warning when workflow agents, forked skills, slash commands, or resumed background agents' requested subagent model is restricted and the parent model runs instead
  • Added a /teleport hint in cloud sessions showing how to continue locally with claude --teleport <session id>
  • Fixed a Bash permission bypass where a crafted command could hide parts of itself from permission checks
  • Fixed permission prompts so commands padded with tabs or invisible Unicode can no longer hide part of the command from the approval dialog
  • Fixed workflow scripts being able to use dynamic import() to run code outside the workflow sandbox
  • Fixed a permission gap where an agent definition's bypassPermissions mode ignored the org bypass-permissions disable policy
  • Fixed resuming a session after a mid-session /cd coming back empty
  • Fixed gateway model discovery hiding Claude models registered under provider-prefixed IDs such as vertex_ai/claude-* or bedrock/anthropic.claude-*
  • Fixed modelOverrides keys that aren't Anthropic model IDs being treated as the session's canonical model ID; unknown keys are now ignored as documented
  • Fixed managed settings: server-delivered settings no longer disable the env block of a machine-local managed-settings.json or MDM profile; admin env now merges per key
  • Fixed sandboxed commands failing to start on Linux when sandbox.filesystem.denyWrite covers the working directory
  • Fixed forked background agents getting stuck "already resuming" for the rest of the session when rebuilding the fork's parent prompt failed during resume
  • Fixed a resumed session failing every turn, or leaving the interactive app on an unresponsive error screen, when its history held a malformed diagnostics attachment
  • Fixed a rare hang when parsing unusual git push output
  • Changed CLAUDE_CODE_DISABLE_1M_CONTEXT to hold every Claude model with a native 1M window to 200K via auto-compaction, not just a fixed list; a startup warning now appears when auto-compaction isn't holding the session to 200K
  • Changed auto-compact to keep sessions on unrecognized model IDs within the assumed context window instead of letting them grow past it; set CLAUDE_CODE_DISABLE_UNKNOWN_MODEL_WINDOW_ENFORCEMENT=1 to restore the previous behavior
  • Changed /review to be an alias of /code-review, which reviews the current diff or a PR (/code-review <level> <pr#>); use /code-review ultra for a deep cloud review
  • Changed /code-review with no effort level to reuse the level you typed last; type a level like /code-review high to change it
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How v2.1.223 went

v2.1.222

Changed 4
  • Auto mode safety improved: messages sent to other agent sessions via SendMessage are now evaluated by the permission classifier before dispatch
  • Improved the refusal when Claude tries to invoke a skill with disable-model-invocation; Claude is now told to ask you to run the skill instead of replicating its workflow
  • The /diff view, the Remote Control workspace diff, and file-edit diffs in Claude Code on the web sessions now use raw git blob content, ignoring workspace-configured diff drivers and textconv
  • Remote Control auto-start changed so repo-local settings (.claude/settings.json or .claude/settings.local.json) can no longer turn it on; enable it at user scope via /config
Fixed 16
  • Worktree-isolated sessions and their subagents can no longer run destructive git commands against the main checkout; isolation now applies to file edits and Bash in every session type
  • PreToolUse auto-allow hooks no longer bypass tool restrictions in background agent tasks such as summaries, compaction, and renames
  • /usage-credits on Team and Enterprise no longer shows "you've already sent a usage credit request" for members whose earlier request was dismissed, allowing them to send a new one
  • Startup connectivity check no longer hangs and fails behind an HTTPS proxy; it now uses the same proxy-aware transport as API requests and times out with a clear message
  • "Connection closed mid-response" errors are no longer reported on responses that had actually completed
  • /usage no longer overattributes usage to MCP servers; a server's share now reflects only the requests that actually consumed its tool results
Removed 1
  • Removed ultraplan feature
What's changed
  • Fixed worktree-isolated sessions and their subagents being able to run destructive git commands against the main checkout; isolation now applies to file edits and Bash in every session type
  • Fixed PreToolUse auto-allow hooks bypassing tool restrictions in background agent tasks (summaries, compaction, renames)
  • Fixed /usage-credits on Team and Enterprise showing "you've already sent a usage credit request" for members whose earlier request was dismissed, blocking them from sending a new one
  • Fixed the startup connectivity check hanging and then failing behind an HTTPS proxy; it now uses the same proxy-aware transport as API requests and times out with a clear message
  • Fixed "Connection closed mid-response" errors being reported on responses that had actually completed
  • Fixed /usage overattributing usage to MCP servers: a server's share now reflects only the requests that actually consumed its tool results, instead of every turn after any call to it
  • Fixed sessions not linking to pull requests created after the branch was pushed, including through the GitHub REST API
  • Fixed org-restricted model: opus-style subagent and teammate family aliases dropping to the parent model instead of stepping down to the newest org-allowed model in the family
  • Fixed stream idle timeout firing on custom ANTHROPIC_BASE_URL gateways despite server keep-alive pings arriving on the wire
  • Fixed claude.ai connectors being falsely marked as needing authorization when the session token is invalid — they now show a /login hint instead
  • Fixed tool errors not being displayed for tools no longer available locally, for example after an MCP server is removed
  • Fixed SendMessage rejecting a long summary — it now truncates instead, so sends no longer fail on a character limit
  • Fixed the spinner's effort label in a subagent's transcript view showing the session's effort level instead of the subagent's own effort: setting
  • Fixed rare crashes when a file watcher hit a filesystem error or during file-watcher teardown
  • Fixed screen readers re-reading the whole input line on every backspace in --ax-screen-reader mode — end-of-line deletions now echo just the deleted characters
  • Fixed host model-selection keys not taking precedence over a stale on-disk managed-settings.json when CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST is set
  • Improved auto mode safety: messages sent to other agent sessions via SendMessage are now evaluated by the permission classifier before dispatch
  • Improved the refusal when Claude tries to invoke a skill with disable-model-invocation: Claude is now told to ask you to run the skill instead of replicating its workflow
  • Improved the /diff view, the Remote Control workspace diff, and file-edit diffs in Claude Code on the web sessions to use raw git blob content, ignoring workspace-configured diff drivers and textconv
  • Changed Remote Control auto-start so repo-local settings (.claude/settings.json or .claude/settings.local.json) can no longer turn it on (they can still turn it off); enable it at user scope via /config
  • Removed ultraplan feature
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How v2.1.222 went

v2.1.221

Added 4
  • Added Focus view in VSCode: a chat-menu toggle that hides tool activity behind an expandable per-turn summary with a live running-tool indicator, toggled with Ctrl+Alt+F or the "Claude Code: Toggle Focus view" command
  • Added mode: "mask" for sandbox credential files on Linux and WSL to read a sentinel copy while the sandbox proxy substitutes the real value on egress; on macOS file masking falls back to deny
  • Added warnings to claude plugin validate when a marketplace or plugin name would be rejected by Claude Desktop's managed marketplace sync
  • Added a prompt-audit subcommand to the claude-api skill for auditing prompts and tool descriptions for patterns written for older models
Changed 17
  • Improved tool search on Google Vertex AI: re-enabled for Claude 4.5-generation and newer models
  • Improved auto mode: permission checks for parallel tool calls are now cache-efficient, and switching modes while a check is pending reliably prompts instead of applying the stale result
  • Reduced prompt-cache costs for auto-mode permission checks by reusing the cached conversation prefix across decisions
  • Improved Stats panel to count cache tokens in its token totals, with a breakdown by input, output, cache read, and cache write
  • Improved /ultrareview error messages when a repo shares no history with its base: a checkout with no branches is now refused up front with advice to create one, and refusal hints no longer suggest git fetch --unshallow on clones that are already complete
  • Improved Windows startup: process creation times are now read via a native kernel32 call instead of spawning PowerShell, so endpoint security tools that gate powershell.exe no longer prompt
Fixed 17
  • Fixed a Bash tool permission-check bypass where zsh could execute hidden commands in [[]] regex conditionals; affected commands now prompt for permission
  • Fixed PowerShell permission checks mishandling paths containing quote characters on Windows; such paths now prompt for approval
  • Fixed the thinking toggle having no effect for the rest of a session that started with thinking off; disabling an MCP server mid-connect no longer silently reverts
  • Fixed MCP servers from --mcp-config not being connected before the first turn in print mode, which made the model emit tool calls as literal text
  • Fixed @-mentioned files being silently dropped when pressing Esc to retract a prompt and resubmitting it
  • Fixed a crash when preparing API requests for SDK MCP tools named after built-in object properties such as constructor
Removed 1
  • Removed the repeated "Permission mode changed while the auto-mode classifier call was queued" notice from approval prompts
What's changed
  • [VSCode] Added Focus view: a chat-menu toggle that hides tool activity behind an expandable per-turn summary with a live running-tool indicator, toggled with Ctrl+Alt+F or the "Claude Code: Toggle Focus view" command
  • Added mode: "mask" for sandbox credential files on Linux and WSL — sandboxed commands read a sentinel copy (the whole file, or just the spans captured by an extract regex) while the sandbox proxy substitutes the real value on egress; on macOS file masking falls back to deny
  • Added warnings to claude plugin validate when a marketplace or plugin name would be rejected by Claude Desktop's managed marketplace sync
  • Added a prompt-audit subcommand to the claude-api skill for auditing prompts and tool descriptions for patterns written for older models
  • Fixed a Bash tool permission-check bypass where zsh could execute hidden commands in [[ ]] regex conditionals; affected commands now prompt for permission
  • Fixed PowerShell permission checks mishandling paths containing quote characters on Windows; such paths now prompt for approval
  • Fixed the thinking toggle having no effect for the rest of a session that started with thinking off; disabling an MCP server mid-connect no longer silently reverts
  • Fixed MCP servers from --mcp-config not being connected before the first turn in print mode (-p), which made the model emit tool calls as literal text
  • Fixed @-mentioned files being silently dropped when pressing Esc to retract a prompt and resubmitting it
  • Fixed a crash when preparing API requests for SDK MCP tools named after built-in object properties such as constructor
  • Fixed WebSearch failing with a 400 error at effort xhigh/max when thinking is disabled
  • Fixed sandboxed large uploads failing with TLS errors through the sandbox proxy
  • Fixed Team and Enterprise spend-limit message incorrectly blaming the org's monthly limit instead of your individual spend limit
  • Fixed Bedrock authentication with AWS SSO named profiles failing in desktop-managed sessions on Windows machines that set a stray HOME environment variable
  • Fixed CLAUDE_CODE_RESUME_INTERRUPTED_TURN=0 not disabling interrupted-turn auto-resume; falsy values are now honored
  • Fixed a rare wake-from-sleep race where two Claude Code processes could both refresh the same MCP connector or WIF OAuth token at once, forcing re-authentication
  • Fixed renaming a session from Claude Code Desktop or claude.ai not updating the CLI's session name; session names from every rename surface are now sanitized
  • Fixed plugin- and org-delivered skills named after terminal-only built-ins (e.g. /help, /feedback) being un-invocable in non-interactive sessions
  • Fixed the "Plugins changed" notification lingering after plugins were reloaded instead of clearing
  • Fixed Vim mode: the yank register now survives dialogs, history search, and the transcript view instead of being silently emptied
  • Fixed Vim mode: undoing back to an empty prompt now arms the "press ← again" confirm before returning to the agent view
  • Improved tool search on Google Vertex AI: re-enabled for Claude 4.5-generation and newer models
  • Improved auto mode: permission checks for parallel tool calls are now cache-efficient, and switching modes while a check is pending reliably prompts instead of applying the stale result
  • Reduced prompt-cache costs for auto-mode permission checks by reusing the cached conversation prefix across decisions
  • Improved Stats panel to count cache tokens in its token totals, with a breakdown by input, output, cache read, and cache write
  • Improved /ultrareview error messages when a repo shares no history with its base: a checkout with no branches is now refused up front with advice to create one, and refusal hints no longer suggest git fetch --unshallow on clones that are already complete
  • Improved Windows startup: process creation times are now read via a native kernel32 call instead of spawning PowerShell, so endpoint security tools that gate powershell.exe no longer prompt
  • Changed background sessions to commit and push to preserve work, open a draft PR only when the task calls for one, follow your CLAUDE.md git instructions, and always end by reporting where the work lives
  • Changed /plugin install to refresh a stale marketplace catalog and retry before reporting a plugin not found
  • Changed plugins installed from /plugin to activate immediately when safe, instead of always requiring /reload-plugins
  • Changed plugins to accept "." as a skills path, and the root-level SKILL.md validation error now suggests using the plugin root
  • Changed /status to show the session kind: interactive, or a background job that is attached or unattended
  • Changed emoji autocomplete to accept common alternate shortcodes like :thumbsup:, :thumbsdown:, and :love:
  • Changed sessions forked with /fork to create a new worktree of their own instead of working in the original session's checkout
  • Changed Claude in Chrome to close the browser tabs it opens once it no longer needs them
  • Changed fast mode to report on the stream when usage credits run out mid-session, instead of failing silently
  • Changed Monitor: a watch that exits without producing any output now says so instead of reporting "stream ended"
  • Changed the Gateway model field validation: non-string values are rejected with a 400 instead of being forwarded
  • Removed the repeated "Permission mode changed while the auto-mode classifier call was queued" notice from approval prompts
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How v2.1.221 went

v2.1.220

What's changed
  • Bug fixes and reliability improvements
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How v2.1.220 went

v2.1.219

Added 9
  • Added Claude Opus 5 (claude-opus-5) as the new default Opus model with 1M context and fast mode at $10/$50 per Mtok
  • Added sandbox.network.strictAllowlist setting to deny non-allowlisted hosts for sandboxed commands without prompting
  • Added DirectoryAdded hook that fires after /add-dir or SDK register_repo_root control request registers a new working directory mid-session
  • Added mcp_server_errors to the headless stream-json init event, listing --mcp-config entries skipped by config validation
  • Added workflowSizeGuideline settings key so the Dynamic workflow size guideline can be set from any settings file
  • Added nested subagent forwarding in stream-json so subagents spawned at depth-2+ appear when --forward-subagent-text is set
Changed 5
  • Changed dynamic workflows to default to a medium size guideline aiming for fewer than 15 agents
  • Changed managed MCP allowlist/denylist ${VAR} entries to resolve from the startup environment and managed-settings env instead of settings-file env
  • Changed the /model picker to highlight only the newest model's name so the highlight marks the new release
  • Updated the claude-api skill to default to Claude Opus 5 with a migration path from Opus 4.8
  • Subagents can now spawn nested subagents up to depth 3 by default (was 1)
Fixed 10
  • Fixed claude -p text output dropping the answer already produced when a turn dies on a mid-stream API error
  • Fixed a permission you approved while a self-hosted runner was restarting being dropped when the session resumed
  • Fixed the Fable model row showing Requires usage credits for plans that include it when a stale cache had baked the label in
  • Fixed a SIGTERM arriving while a self-hosted runner was starting up leaving a stale active row until the lease expired
  • Fixed the /model picker showing the merged Opus row as plain Opus instead of Opus (1M context)
  • Fixed copy-on-select inside GNU screen printing base64 into the terminal instead of copying the selection
Removed 1
  • Removed Opus 4.7 from fast mode; /fast now applies to Opus 5 and Opus 4.8
What's changed
  • Added Claude Opus 5 (claude-opus-5), now the default Opus model — 1M context, fast mode at $10/$50 per Mtok
  • Added sandbox.network.strictAllowlist setting to deny non-allowlisted hosts for sandboxed commands without prompting
  • Added DirectoryAdded hook that fires after /add-dir or the SDK register_repo_root control request registers a new working directory mid-session
  • Added mcp_server_errors to the headless stream-json init event, listing --mcp-config entries skipped by config validation; terminal runs print a startup warning
  • Added the workflowSizeGuideline settings key so the advisory Dynamic workflow size guideline can be set from any settings file; the /config row is hidden while one does
  • Added nested subagent forwarding in stream-json: subagents spawned at depth-2+ now appear when --forward-subagent-text is set, keyed by their spawning Agent tool_use id
  • Fixed claude -p text output dropping the answer already produced when a turn dies on a mid-stream API error
  • Added HTTP status and error text to claude mcp list and /mcp when a server fails to connect, and a warning for MCP config values with hidden leading or trailing whitespace
  • Fixed a permission you approved while a self-hosted runner was restarting being dropped when the session resumed, so the approved action now runs
  • Fixed the Fable model row showing "Requires usage credits" for plans that include it, when a stale cache had baked the label in
  • Fixed a SIGTERM arriving while a self-hosted runner was starting up leaving a stale active row until the lease expired; it now deregisters cleanly
  • Added structured failure categories to self-hosted runner spawn and session failures, so hook errors, runner crashes and config errors can be told apart
  • Fixed the /model picker showing the merged Opus row as plain "Opus" instead of "Opus (1M context)"
  • Fixed copy-on-select inside GNU screen printing base64 into the terminal instead of copying the selection
  • Fixed Remote Control clients keeping a stale fast-mode status after a model switch, reconnect, or failed org check
  • Fixed CLAUDE_CODE_GIT_BASH_PATH on Windows exiting or being used as bash when the path isn't a bash/sh binary; it's now ignored with a warning
  • Fixed Vim mode: pressing ← on an empty prompt now returns to the agent view from NORMAL mode, not just INSERT
  • Fixed screen-reader mode rewriting the entire input line on every keystroke instead of echoing only the typed character
  • Improved the "Remote Control is only available via api.anthropic.com" error to name the specific setting that caused it
  • Improved claude --teleport to show which repo your current checkout points at when it doesn't match the session's repo
  • Changed dynamic workflows to default to a medium size guideline (aim for fewer than 15 agents); pick another size or unrestricted with Dynamic workflow size in /config
  • Changed managed MCP allowlist/denylist ${VAR} entries to resolve from the startup environment and managed-settings env instead of settings-file env
  • Changed the /model picker to highlight only the newest model's name, so the highlight marks the new release rather than an arbitrary subset of the list
  • Added the current default workflow size to the running-workflow status line, with a pointer to /config for changing it
  • Removed Opus 4.7 from fast mode; /fast now applies to Opus 5 and Opus 4.8
  • Updated the claude-api skill to default to Claude Opus 5, with a migration path from Opus 4.8
  • Subagents can now spawn nested subagents up to depth 3 by default (was 1); set CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH=1 to disable nesting
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How v2.1.219 went

v2.1.218

Added 2
  • Added screen-reader announcements of deleted text for word and line deletions in `--ax-screen-reader` mode
  • Added HTTP status and error text to `claude mcp list` and `/mcp` when a server fails to connect, and a warning for MCP config values with hidden leading or trailing whitespace
Changed 1
  • Changed `/code-review` to run as a background subagent, so review work no longer fills your conversation and keeps stacked slash commands as its review target
Fixed 17
  • Fixed Windows paths with `\u`-prefixed segments being corrupted into CJK characters in tool inputs
  • Fixed the left arrow key discarding the conversation with no undo by adding confirmation prompts and Esc key support
  • Fixed multi-line paste collapsing into one line with `j` in place of newlines in terminals that encode pasted newlines as Ctrl+J
  • Fixed `/context` reporting stale pre-compact token usage after compacting from the message picker
  • Fixed `/ultrareview` failing on descriptive arguments by allowing them to run a review of the current branch with the text applied as a note
  • Fixed `/code-review ultra` silently running a local review in non-interactive sessions by launching the cloud review instead
What's changed
  • Changed /code-review to run as a background subagent, so review work no longer fills your conversation and keeps stacked slash commands as its review target
  • Added screen-reader announcements of deleted text for word and line deletions (Option+Delete, Ctrl+W, Cmd+Backspace, Ctrl+U, Ctrl+K) in --ax-screen-reader mode
  • Fixed Windows paths with \u-prefixed segments (like C:\Users\unicorn) being corrupted into CJK characters in tool inputs, which made those files inaccessible
  • Fixed the left arrow key discarding the conversation with no undo: presses right after editing now ask to confirm, and Esc in the agent view returns to the conversation it backgrounded
  • Added HTTP status and error text to claude mcp list and /mcp when a server fails to connect, and a warning for MCP config values with hidden leading or trailing whitespace
  • Fixed multi-line paste collapsing into one line with j in place of newlines in terminals that encode pasted newlines as Ctrl+J
  • Fixed /context reporting stale pre-compact token usage after compacting from the message picker
  • Fixed /ultrareview failing on descriptive arguments like "review my auth changes" — they now run a review of your current branch with the text applied as a note to the findings
  • Fixed /code-review ultra silently running a local review in non-interactive sessions — it now launches the cloud review
  • Fixed gateway spend metering to price Bedrock application-inference-profile ARNs and other config-mapped upstream model IDs at the configured model's rates
  • Fixed mojibake when a long IDE selection was truncated mid-emoji, and a case where a tool executor error could be silently dropped
  • Fixed an engine teardown race that could start and abandon a phantom turn, and made input pushed after close consistently rejected
  • Fixed spurious "[Request interrupted by user]" messages after interrupted tool calls, and an unpaired tool_use block left in the transcript when a tool aborted mid-response
  • Fixed VoiceOver reading "new line" instead of echoing the typed space at the end of the input in --ax-screen-reader mode
  • Fixed plugin and settings panels not moving the terminal cursor to the focused row, so screen readers and magnifiers can follow arrow-key navigation
  • Fixed crashes (maximum call stack exceeded) when a deeply nested watched directory tree was deleted or moved, and when rendering deeply nested UI trees
  • Fixed pull request events occasionally being lost when a session exited immediately after creating or linking a PR
  • Fixed the Bedrock setup wizard failing profile verification for assume-role profiles in partitioned AWS regions and on proxy-only networks
  • Fixed rare negative or incorrect turn duration measurements after a system clock adjustment by timing turns with a monotonic clock
  • Fixed the "N MCP servers need authentication" startup notice over-counting claude.ai connectors that aren't connected in claude.ai
  • Fixed prompt history entries being dropped or duplicated when history writes raced or failed
  • Fixed a retry loop that re-sent identical doomed requests after a context-overflow error with a large thinking budget; Ctrl+B backgrounding now applies the same background-shell caps as other paths
  • Fixed agent frontmatter hooks running from untrusted folders: hooks now require the agent file's own folder to have accepted workspace trust
  • Fixed fork-session lineage being lost after compaction in headless and SDK sessions
  • Fixed a resumed session failing every turn, or crashing on resume, when its history held a malformed delta attachment
  • Improved /ultrareview error feedback so Claude can correct an invalid argument instead of retrying it unchanged
  • Improved auto mode: the dangerous-rm, background-&, and suspicious-Windows-path checks no longer open permission dialogs; the auto-mode classifier adjudicates them instead
  • Improved sandbox command restrictions for IDE interactions
  • Improved trust dialogs to name the repository root the grant covers
  • Changed /deep-research to start only when invoked manually; Claude no longer launches it on its own
  • Changed plan mode with auto to no longer prompt for Bash commands the static analyzer can't prove read-only; the auto-mode classifier judges them instead
  • Added an announcement when fast mode changes as a result of switching models via /config model=<x> or Remote Control
  • Changed server-managed settings so benign feature and cost toggles no longer trigger the settings-approval prompt
  • Changed agent markdown files to reject agent names containing :, which is reserved for plugin namespacing
  • Changed skills with context: fork to run in the background by default; opt out per skill with background: false
  • Added yes/no/on/off/1/0 (case-insensitive) as accepted values for skill and plugin frontmatter booleans, alongside true/false
  • Fixed remote sessions continuing to send heartbeats after their worker was replaced, which left long-lived desktop and IDE processes retrying a rejected request every few seconds forever
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How v2.1.218 went

v2.1.217

Added 3
  • Add emoji shortcode autocomplete in the prompt input to insert emojis by typing shortcodes like `:heart:` for ❤️, with suggestions available and disable option via `emojiCompletionEnabled` setting
  • Add warnings when transcript writes are failing (e.g. disk full) or when session saving is off due to an inherited environment variable
  • Add a cap on concurrently-running subagents with a default of 20, configurable via `CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS`
Changed 4
  • Change the login-expiry warning to appear 3 days before expiry instead of 5
  • Change the frontend-design plugin suggestion tip to cap at 3 lifetime impressions instead of repeating indefinitely
  • Change subagents to no longer spawn nested subagents by default, with `CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH` allowing deeper nesting
  • Improve footer PR badge links to be clickable hyperlinks even when terminal support can't be detected, with `FORCE_HYPERLINK=0` to opt out
Fixed 14
  • Fix a memory leak where truncated MCP tool outputs kept the full untruncated result in memory for the rest of the session
  • Fix Windows auto-update failures that could leave `claude.exe` missing by automatically restoring the preserved executable on failed updates
  • Fix background session isolation not canonicalizing symlinked working directories, which could let sessions escape their workspace folder
  • Fix auto-compact never triggering for Claude Opus 4.8 on Bedrock and `/compact` failing once over the limit
  • Fix corporate mTLS, TLS-verify, OAuth scope, and proxy settings being ignored in Claude Desktop sessions
  • Fix screen reader mode's startup announcement being cut off by the first prompt render
What's changed
  • Added emoji shortcode autocomplete in the prompt input: type :heart: to insert ❤️, or :hea for suggestions — disable with the emojiCompletionEnabled setting
  • Added warnings when transcript writes are failing (e.g. disk full) or when session saving is off due to an inherited environment variable, instead of losing transcripts silently
  • Fixed a memory leak where truncated MCP tool outputs kept the full untruncated result in memory for the rest of the session
  • Fixed Windows auto-update failures that could leave claude.exe missing; failed updates now restore the preserved executable automatically
  • Fixed background session isolation not canonicalizing symlinked working directories, which could let sessions escape their workspace folder
  • Fixed auto-compact never triggering for Claude Opus 4.8 on Bedrock and /compact failing once over the limit
  • Fixed corporate mTLS, TLS-verify, OAuth scope, and proxy settings being ignored in Claude Desktop sessions
  • Fixed screen reader mode's startup announcement being cut off by the first prompt render, and the thinking status row re-rendering every few seconds to update elapsed time and token counts
  • Fixed managed settings that set OTEL_EXPORTER_OTLP_ENDPOINT not governing all signals — lower-scope signal-specific overrides no longer redirect telemetry away from the managed endpoint
  • Fixed --resume/--continue and /resume failing with a TypeError when a transcript has a malformed attachment entry
  • Fixed Remote Control sessions not showing a pending permission prompt or dialog to viewers that connected after it appeared
  • Fixed background shells sometimes becoming impossible to stop after a session is sent to the background (/background or ←) or when the session exits on a heavily loaded machine, most visible on Windows
  • Fixed a CLAUDE.md or SKILL.md paths frontmatter value with many brace groups OOM-killing or stalling the CLI at startup — brace expansion is now budget-bounded
  • Fixed the transcript preview sitting flush against the input area when attaching to a starting background session; it now leaves the same one-line gap as the live layout, so the transcript no longer shifts when the session takes over
  • Improved footer PR badge links to be clickable hyperlinks even when terminal support can't be detected (e.g. over ssh/tmux); set FORCE_HYPERLINK=0 to opt out
  • Changed the login-expiry warning to appear 3 days before expiry instead of 5
  • Capped the frontend-design plugin suggestion tip at 3 lifetime impressions instead of repeating indefinitely
  • Added a cap on concurrently-running subagents (default 20, override with CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS) so one message can't fan out unbounded background agents
  • Changed subagents to no longer spawn nested subagents by default; set CLAUDE_CODE_MAX_SUBAGENT_SPAWN_DEPTH to allow deeper nesting
  • Fixed --max-budget-usd not stopping background subagents: once the cap is reached, new spawns are denied and running background agents are halted
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How v2.1.217 went

v2.1.216

Added 1
  • Added sandbox.filesystem.disabled setting to skip filesystem isolation while keeping network egress control
Fixed 19
  • Fixed a slowdown in long sessions where message normalization cost grew quadratically with the number of turns, causing multi-second stalls and slow resumes
  • Fixed auto mode denying commands with HTTP 401 classifier errors after the OAuth token expired or rotated mid-session
  • Fixed AskUserQuestion telling Claude to continue even when your answer asked it to wait or explain first — free-text answers now get neutral wording
  • Fixed Claude Code on the web re-asking the same question and dropping your answer after the session sat idle for a few minutes
  • Fixed @-mentions silently attaching nothing after file-modifying hooks, vim dot-repeat of c-operators and paste, statusline running twice on resume, and resume-picker hangs on failure
  • Fixed resumed background agent sessions reverting to the default agent: the agent's prompt and tool restrictions are now restored
What's changed
  • Added sandbox.filesystem.disabled setting to skip filesystem isolation while keeping network egress control
  • Fixed a slowdown in long sessions where message normalization cost grew quadratically with the number of turns, causing multi-second stalls and slow resumes
  • Fixed auto mode denying commands with "HTTP 401" classifier errors after the OAuth token expired or rotated mid-session
  • Fixed AskUserQuestion telling Claude to continue even when your answer asked it to wait or explain first — free-text answers now get neutral wording
  • Fixed Claude Code on the web re-asking the same question and dropping your answer after the session sat idle for a few minutes
  • Fixed @-mentions silently attaching nothing after file-modifying hooks, vim dot-repeat of c-operators and paste, statusline running twice on resume, and resume-picker hangs on failure
  • Fixed resumed background agent sessions reverting to the default agent: the agent's prompt and tool restrictions are now restored
  • Fixed worktree-isolated subagents redirecting git into the shared checkout via git -C, --git-dir, or GIT_DIR/GIT_WORK_TREE
  • Fixed worktree sessions landing in another project's leftover worktree when the working directory did not match the selected project
  • Fixed background sessions whose worktree has no git repository being undeletable
  • Fixed claude daemon stop --any potentially terminating an unrelated process via a stale legacy daemon lockfile
  • Fixed Esc-Esc at an idle prompt not opening the rewind picker in long-running sessions with background tasks
  • Fixed Bash command permission checking for compound statements with redirects inside && lists or negations
  • Fixed pressing Ctrl+X twice in the agent list failing to delete a session, and deleted sessions reappearing when their background worker had died
  • Fixed background subagents getting cancelled when a high-priority message arrives during their startup window
  • Fixed mouse and focus garbage in the terminal while a GUI editor from /memory, /plan, /keybindings, or Ctrl+G is open; /memory no longer waits for the editor to close
  • Fixed Claude-in-Chrome 403-looping on reconnect when the session's OAuth token lacks a required scope
  • Fixed workflow saves and scheduled-task writes following a symlink at .claude, which could redirect writes outside the project
  • Fixed MCP re-authenticate revoking working credentials before the new sign-in succeeds, and the reconnect needs-auth message in background sessions pointing at an unusable command
  • Fixed read-only commands on Windows accessing network paths without a permission prompt
  • Fixed Bash command parsing of non-ASCII characters to match real shell word boundaries
  • Fixed PowerShell tool permission validation of commands containing invisible Unicode characters
  • Fixed dialogs in fullscreen mode stretching past the right-hand edge of their panel
  • Fixed the /config settings list in fullscreen mode clipping its keyboard-hint footer
  • Fixed the transcript-mode (Ctrl+O) footer hint wrapping on terminals narrower than 104 columns
  • Fixed the Prometheus metrics endpoint (OTEL_METRICS_EXPORTER=prometheus) emitting invalid # UNIT lines
  • Fixed skills and commands changed during a session not appearing in the slash menu until restart
  • Fixed plugin skills with a name frontmatter field losing their plugin prefix in slash-command autocomplete
  • Fixed telemetry misreporting permission denials: failed permission-prompt requests no longer count as user rejections, and user interrupts are now reported as user aborts instead of rejections
  • Improved the /fork confirmation to one line with the new session's name, claude attach id, and a note when the copy shares your checkout
  • Improved validation of git and gh command arguments in the PowerShell tool
  • Improved the /ultrareview diff-too-large error to show configured limits, measured diff size, and largest contributing files
  • Improved /code-review ultra empty-diff message to name the exact base ref and suggest passing an explicit base
  • Improved the spend limit adjustment prompt to show the server's reason when a spend limit change is rejected
  • /context now shows an explicit warning when the conversation exceeds the context window, and a failed /compact displays as an error
  • /rewind no longer restores or deletes files through symlinks or hard links at tracked paths and reports how many paths it skipped
  • Background sessions: /mcp and /install-github-app now park a "needs input" request in the agent view when no client is attached
  • Updated the bundled dataviz skill: reordered the default chart palette and fixed guidance that suggested direct labels for four-series charts
  • [VSCode] Fixed right-to-left text (Arabic, Hebrew, Persian) rendering in the wrong order when mixed with English or code
  • Fixed cloud sessions dropping the in-flight message when the session's container restarts mid-turn — the interrupted turn now re-runs on resume instead of leaving the session unresponsive
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How v2.1.216 went

v2.1.215

Changed 1
  • Claude no longer runs the /verify and /code-review skills automatically; they must be invoked with /verify or /code-review when needed
What's changed
  • Claude no longer runs the /verify and /code-review skills on its own; invoke them with /verify or /code-review when you want them
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How v2.1.215 went

v2.1.214

Added 7
  • Added the EndConversation tool: Claude can end sessions with highly abusive users or jailbreak attempts
  • Added a periodic progress heartbeat for long-running tool calls that previously went silent
  • Added an ISO `modified` timestamp to memory file frontmatter
  • Added `message.uuid`, `client_request_id`, and `tool_source` attributes to OpenTelemetry log events for message-level correlation and tool provenance
  • Added `CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH` to configure the 60 KB truncation limit on OpenTelemetry content attributes
  • Added reasoning effort to the `subagentStatusLine` payload, so custom agent rows can render model and effort
  • Added permission prompts for `docker` commands carrying daemon-redirect flags (`--url`, `--connection`, `--identity`, and Podman's remote mode) that previously ran without one
Fixed 13
  • Fixed single-segment `dir/**` allow rules like `Edit(src/**)` auto-approving writes to nested `dir/` directories anywhere in the tree instead of only `<cwd>/dir`
  • Fixed a permission-check bypass affecting commands run in Windows PowerShell 5.1 sessions
  • Fixed Bash permission checks to fail closed on file-descriptor redirect forms that bash parses differently than the permission analyzer
  • Fixed Bash permission checks misjudging very long commands — commands over 10,000 characters now always prompt instead of running automatically
  • Fixed Bash permission checks treating zsh variable subscripts and modifiers in `[[ ]]` comparisons as inert text — these commands now prompt for approval
  • Fixed Bash permission checks to no longer auto-approve certain `help` and `man` commands that could run unsafe options, command substitutions, or backslash paths
What's changed
  • Fixed single-segment dir/** allow rules like Edit(src/**) auto-approving writes to nested dir/ directories anywhere in the tree instead of only <cwd>/dir
  • Fixed a permission-check bypass affecting commands run in Windows PowerShell 5.1 sessions
  • Fixed Bash permission checks to fail closed on file-descriptor redirect forms that bash parses differently than the permission analyzer
  • Fixed Bash permission checks misjudging very long commands — commands over 10,000 characters now always prompt instead of running automatically
  • Fixed Bash permission checks treating zsh variable subscripts and modifiers in [[ ]] comparisons as inert text — these commands now prompt for approval
  • Fixed Bash permission checks to no longer auto-approve certain help and man commands that could run unsafe options, command substitutions, or backslash paths
  • Fixed permission prompts on remote sessions that could proceed before the local confirmation dialog
  • Added the EndConversation tool: Claude can end sessions with highly abusive users or jailbreak attempts, as on claude.ai since 2025 — see https://www.anthropic.com/research/end-subset-conversations
  • Added a periodic progress heartbeat for long-running tool calls that previously went silent
  • Added an ISO modified timestamp to memory file frontmatter
  • Added message.uuid, client_request_id, and tool_source attributes to OpenTelemetry log events for message-level correlation and tool provenance
  • Added CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH to configure the 60 KB truncation limit on OpenTelemetry content attributes
  • Added reasoning effort to the subagentStatusLine payload, so custom agent rows can render model and effort
  • Added permission prompts for docker commands (including the Podman docker shim) carrying daemon-redirect flags (--url, --connection, --identity, and Podman's remote mode) that previously ran without one
  • Fixed a crash when a GrowthBook feature evaluates to null, and a bug where a malformed flag payload could wipe the cached feature flags
  • Fixed Bash tool killing the Claude session when a pkill -f pattern accidentally matched the CLI's own process (Linux)
  • Fixed unbounded memory growth when --settings points at a device file or multi-GB file; oversized (>2 MiB) settings files now fail at startup with a clear error
  • Fixed streaming turns failing with "Socket is closed" behind corporate proxies on Windows
  • Fixed stream-json output truncation at exit for slow-reading SDK/pipeline consumers; the exit drain now scales with queued bytes instead of a flat 2s cap
  • Fixed scheduled tasks refusing their own configured prompt as untrusted input — the fired prompt is now delivered as the session's assigned task
  • Fixed PowerShell tool commands hanging until timeout when a child process waited on standard input (Windows)
  • Fixed Python scripts under the PowerShell tool crashing with UnicodeDecodeError when reading non-UTF-8 data from standard input (Windows)
  • Fixed Python scripts run via the PowerShell tool crashing with UnicodeEncodeError on non-ASCII output, and PowerShell 7 error messages containing raw ANSI escape sequences (Windows)
  • Fixed the PowerShell tool reporting where.exe, fc.exe, and diff.exe as errors when they return a valid negative answer (Windows)
  • Fixed > and >> under the PowerShell tool on Windows PowerShell 5.1 writing UTF-16LE files that other tools couldn't read as UTF-8
  • Fixed a displaced background daemon deleting its successor's control socket on shutdown, which made the next client kill the healthy replacement daemon
  • Fixed background sessions parked with ← or /background and left idle keeping the background daemon and a worker process alive indefinitely
  • Fixed completed background sessions being impossible to remove via claude rm or the agent view once the background service had gone idle
  • Fixed background sessions dispatched from a non-git folder being impossible to delete from the agents view
  • Fixed reopening a stopped background session failing to restore its saved conversation when an unreadable folder exists in the session store
  • Fixed the Remote Control "session ready" push notification firing for sessions where Remote Control was not explicitly enabled
  • Fixed /install-github-app and the /mcp settings menu being blocked in agent-view sessions — they're now refused only in background sessions with no terminal attached
  • Fixed plugins enabled via the --settings CLI flag not loading (regression since v2.1.181)
  • Fixed feature flags going stale in long-running sessions after the OAuth token rotates
  • Fixed /ultrareview refusing to run in repos with no merge base — it now offers to review all tracked files
  • Fixed claude update and claude doctor hanging silently, and the /status System diagnostics section going blank, when a shell-config path is a directory
  • Fixed memory frontmatter values being silently truncated at an inline # when memory files are saved
  • Fixed session cost and token telemetry double-counting on streams that emit multiple cumulative message_delta frames
  • Fixed a spurious "check your network" warning that appeared while the advisor was thinking
  • Fixed hooks with exit code 2 not blocking as documented when the hook's stdout JSON fails schema validation
  • Fixed OTel log events emitted outside the turn's async context missing the interaction span's trace context
  • Fixed MCP transient errors during prompts/resources refresh clearing the server's slash commands and resources
  • Improved the claude rc workspace-trust error in the home directory to say trust there is never saved and to suggest running from a project directory
  • Changed single-segment dir/** hook if: conditions to match only <cwd>/dir; write **/dir/** for any-depth matching. deny/ask permission rules keep their any-depth match.
  • Changed file commands using -m/--magic-file or -f/--files-from to require permission instead of being auto-allowed as read-only
  • Changed keep-alive connection pooling to disable after a stale-connection error, so retries open a fresh socket
  • Changed SessionStart hooks to report source "fork" when a session begins as a fork instead of "resume"
View originalPermalink
How v2.1.214 went

v2.1.212

Added 5
  • Added claude auto-mode reset to restore the default auto-mode configuration, with a confirmation prompt
  • Added a session-wide limit on WebSearch tool calls (default 200, tunable via CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION)
  • Added a per-session cap on subagent spawns (default 200, override with CLAUDE_CODE_MAX_SUBAGENTS_PER_SESSION)
  • MCP tool calls running longer than 2 minutes now move to the background automatically so the session stays usable
  • Typing /resume in the agent view now opens a picker of past sessions and resumes your pick as a background session
Changed 1
  • /fork now copies your conversation into a new background session while you keep working; the in-session subagent it used to launch is now /subtask
Fixed 14
  • Fixed plan mode auto-running file-modifying Bash commands without a permission prompt
  • Fixed worktree creation following a repository-committed symlink at .claude/worktrees, which could create files outside the repository
  • Fixed a continue:false hook's halt being dropped when the tool fails or completes mid-stream
  • Fixed SIGTERM during a running Bash tool orphaning the command's process tree in print/SDK mode
  • Fixed /background and claude --bg failing with EUNKNOWN on Windows when Group Policy blocks PowerShell 5.1
  • Fixed shell mode (!) not executing commands containing file paths while the path autocomplete popup was open
What's changed
  • /fork now copies your conversation into a new background session (its own row in claude agents) while you keep working; the in-session subagent it used to launch is now /subtask
  • Added claude auto-mode reset to restore the default auto-mode configuration, with a confirmation prompt (pass --yes to skip)
  • Added a session-wide limit on WebSearch tool calls (default 200, tunable via CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION) to stop runaway search loops
  • Added a per-session cap on subagent spawns (default 200, override with CLAUDE_CODE_MAX_SUBAGENTS_PER_SESSION) to stop runaway delegation loops; /clear resets the budget
  • MCP tool calls running longer than 2 minutes now move to the background automatically so the session stays usable; configure the threshold or disable with CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS
  • Typing /resume in the agent view now opens a picker of past sessions — including sessions deleted from the list — and resumes your pick as a background session
  • Fixed plan mode auto-running file-modifying Bash commands (e.g. touch, rm) without a permission prompt or SDK canUseTool callback
  • Fixed worktree creation following a repository-committed symlink at .claude/worktrees, which could create files outside the repository
  • Fixed a continue:false hook's halt being dropped when the tool fails or completes mid-stream, and hook infrastructure errors being misreported as user rejections
  • Fixed SIGTERM during a running Bash tool orphaning the command's process tree in print/SDK mode; the CLI now aborts the turn, kills the tree, and exits 143
  • Fixed /background and claude --bg failing with "EUNKNOWN: unknown error, uv_spawn" on Windows when Group Policy blocks PowerShell 5.1; the daemon now prefers PowerShell 7
  • Fixed shell mode (!) not executing commands containing file paths while the path autocomplete popup was open
  • Fixed auto-mode denial notifications rendering broken characters when a long denial reason was truncated mid-emoji
  • Fixed Ctrl+J not inserting a newline in the agent view dispatch input on terminals with extended key reporting, and surfaced the newline shortcut in the ? help overlay
  • Fixed /ultrareview rejecting PR references like #123, PR 123, and pasted PR URLs; error hints now name the command you actually typed
  • Fixed /ultrareview <branch> not fetching the branch from origin when it exists remotely; it now suggests the closest branch name on typos
  • Fixed /ultrareview skipping the billing confirmation in a new conversation after /clear
  • Fixed /ultrareview's "not a git repository" error on Claude Desktop now suggesting the project's repository folder instead of terminal commands
  • Fixed hosted (host-managed) sessions failing at startup when repository settings configured mTLS certs, extra CA bundles, or OAuth scopes; these transport settings are now ignored with a warning
  • Fixed a spurious "File has not been read yet" error when editing a file that had been read with offset/limit before resuming a session
  • Fixed ExitWorktree failing with "no active EnterWorktree session" after resuming a session with --continue/--resume in print/SDK mode
  • Fixed the workflow agent grid staying empty for Remote Control clients that join a session mid-run
  • Fixed streaming-mode control requests being marked complete before their handler finished, which could lose the request on session restart
  • Fixed background sessions created with /fork losing their live-parent protection after a state write failure
  • Fixed reopening a stopped background session from the agent view failing silently — it now resumes the session, or shows why it can't and lets you force a restart
  • Fixed agent teams: a stopping teammate could send the leader duplicate idle notifications when team initialization re-ran within a session
  • Fixed the plan-approval dialog footer splitting "ctrl+g to edit in " apart when the file path is long
  • Fixed the welcome banner keeping its old panel widths after a combined width+height terminal resize in fullscreen mode
  • Fixed diff previews losing their line numbers and +/- markers in narrow layouts
  • Fixed @-mentions attaching nothing after a partial file read, plugin uninstall targeting the wrong marketplace, and false "Command timed out" on exit code 143
  • Fixed OpenTelemetry HTTP exports being rejected with 411/400 by Azure Monitor and other endpoints that don't accept chunked transfer encoding
  • Fixed OTLP event log records missing trace_id/span_id when TRACEPARENT is set in SDK/headless mode
  • Fixed conversations with many images incorrectly failing with "Request too large" errors, and improved the error message to explain the actual cause
  • Fixed web search and web fetch returning "API Error" text as search results or page content when the API was overloaded
  • Improved web search and web fetch reliability by retrying 529 errors and rate-limited requests with bounded backoff
  • Improved prompt caching: the mid-conversation system block now works behind LLM gateways and custom base URLs (Bedrock, Vertex, 1P)
  • Improved background agent attach: cold-attaching now instantly shows the formatted transcript while the session boots, instead of a blank wait
  • Reduced token usage in inter-agent messaging: SendMessage bodies are no longer duplicated into replayed history and tool results
  • Changed /fork to name the copy after your prompt when the session has no title, so the row is recognizable in the agent view
  • Changed bare /btw to reopen the side-question panel on your most recent exchange so you can browse earlier answers
  • Changed the ← footer hint to pulse N done for a moment when a background agent finishes while nothing needs your input
  • Deprecated the Task tool's mode parameter (now ignored); subagents inherit the parent session's permission mode by default
  • Changed Enterprise forceLoginMethod to be enforced for VS Code extension, SDK, setup-token, and install-github-app logins, not just the terminal
  • Changed session transcripts to record the reasoning effort level on each assistant message
  • Changed headless/SDK sessions to apply a set_model control request mid-turn; the next model round-trip uses the new model instead of waiting for the next turn
  • Changed agent view / claude agents --json: sessions waiting on a sandbox, MCP-input, or managed-settings prompt now show as "Needs input" instead of "Working"
  • Updated the auth status panel title from "Cloud authentication" to "Authentication"
  • Corrected an earlier release note (2.1.200): tmux through the 3.6 series lacks synchronized output; newer tmux with support is detected automatically
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How v2.1.212 went

v2.1.211

Added 1
  • Add `--forward-subagent-text` flag and `CLAUDE_CODE_FORWARD_SUBAGENT_TEXT` environment variable to include subagent text and thinking in stream-json output
Fixed 18
  • Fix permission previews relayed to chat channels not neutralizing bidirectional-override, zero-width, and look-alike quote characters so tool inputs cannot visually alter the approval message
  • Fix auto mode overriding a PreToolUse hook's `ask` decision for unsandboxed Bash — hook `ask` now floors the decision at a prompt
  • Fix parallel Claude Code sessions all logging out simultaneously after wake-from-sleep when many sessions share one credential store
  • Fix plugin MCP servers not reconnecting after an idle web session woke, leaving MCP calls failing until the next message
  • Fix Claude Code on Vertex and Bedrock attempting the default Opus model at startup and printing a spurious fallback notice when a model is explicitly configured
  • Fix subagents spawned with an explicit model override reverting to the parent's model when resumed or sent a follow-up message
What's changed
  • Added --forward-subagent-text flag and CLAUDE_CODE_FORWARD_SUBAGENT_TEXT environment variable to include subagent text and thinking in stream-json output
  • Fixed permission previews relayed to chat channels not neutralizing bidirectional-override, zero-width, and look-alike quote characters, so tool inputs cannot visually alter the approval message
  • Fixed auto mode overriding a PreToolUse hook's ask decision for unsandboxed Bash — a hook ask now floors the decision at a prompt
  • Fixed parallel Claude Code sessions all logging out simultaneously after wake-from-sleep when many sessions share one credential store
  • Fixed plugin MCP servers not reconnecting after an idle web session woke, leaving MCP calls failing until the next message
  • Fixed Claude Code on Vertex and Bedrock attempting the default Opus model at startup and printing a spurious fallback notice when a model is explicitly configured
  • Fixed subagents spawned with an explicit model override reverting to the parent's model when resumed or sent a follow-up message
  • Fixed nested .claude/rules/*.md files loading even when setting sources exclude project settings
  • Fixed file upload validation: filenames ending in a DOS device suffix (.prn) or trailing dot are now accepted, and files with multiple hard links are refused
  • Fixed file uploads to Claude in Chrome from remote and CLI sessions
  • Fixed edits that leave the input as "?" being silently swallowed and toggling the shortcuts panel
  • Fixed a startup hang when the Claude in Chrome extension is enabled but Chrome is not running
  • Fixed a 300ms delay revealing async content (Settings tabs, Stats, diff views, and other loading states)
  • Fixed reopening a just-stopped background session from the agents view starting a blank conversation under the same session id
  • Fixed /loop hiding the session from /resume after a single use
  • Fixed screen reader users losing the audible terminal bell after /terminal-setup or onboarding terminal setup
  • Fixed background jobs on LLM gateway auth (ANTHROPIC_AUTH_TOKEN + ANTHROPIC_BASE_URL) coming back "Not logged in" after the daemon respawns them
  • Fixed claude agents jobs becoming permanently undeletable when git no longer recognizes their worktree — the row now shows why the delete was refused instead of silently reappearing
  • Fixed /clear not resetting the session cost counter — the statusline's cost now starts at $0 after /clear
  • Fixed Claude in Chrome setup pages failing to open in the browser on Windows
  • Fixed headless print-mode sessions on Windows crashing or silently exiting when stdin is unreadable
  • Fixed background session titles in the agents view showing the naming model's refusal text when the prompt contains a link
  • Fixed background agents killed by the user auto-respawning, and revived agents re-running stale prompts from old sessions
  • Fixed routines with no schedule reporting a next run time in the year 1
  • Hardened synced skill/plugin directory naming on Windows and kept CCR web fetch/search proxies working after /clear
  • Improved terminal layout and rendering performance
  • Improved background agent result reporting — Claude now reports the status of still-running agents and waits for the real completion instead of fabricating results
  • Improved the memory index over-limit warning to measure only loaded content, excluding frontmatter and HTML comments
  • Updated integer environment variables (timeouts, token budgets, retry counts) to accept scientific notation and digit-separator spellings like 1e6 and 64_000
  • Updated documentation links to the current docs sites
  • Changed "always allow" permission rules to save at the repository root, so approvals granted in a git worktree persist across sessions and worktrees
  • Changed /usage-credits to ask for confirmation before sending a request to organization admins
  • Changed Vim mode s and S (substitute char/line) to work in NORMAL mode, matching vim behavior
  • [VSCode] Updated the Remote Control banner to describe what it does
  • Claude in Chrome: hardened file-upload path validation
  • Claude in Chrome: save_to_disk on screenshot actions now writes the image to disk and returns the path; previously it did nothing
  • Fixed a prompt-caching regression on Bedrock, Vertex, Mantle, and Foundry that billed the trailing system context block as fresh input tokens on every request.
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How v2.1.211 went

v2.1.210

Added 2
  • Added a live elapsed-time counter to the collapsed tool summary line so long-running tool calls visibly tick instead of looking stuck
  • Added a startup warning for Write(path), NotebookEdit(path), and Glob(path) permission rules — use Edit(path) or Read(path) instead
Fixed 18
  • Fixed isolation: 'worktree' subagents being able to run git-mutating commands against the main repo checkout instead of their own isolated worktree
  • Fixed the ultracode keyword opt-in firing on non-human-originated input such as webhook payloads and relayed PR comments
  • Fixed a rendered text fragment leaking into crash telemetry when a UI component returned content outside a styled text element
  • Fixed paste markers leaking into external editors opened from Claude Code, which could appear as stray È/É characters around pasted text
  • Fixed claude attach sometimes failing with "job not found" or "agent is still starting" errors during session transitions — attach now waits for the daemon to settle, and terminal resizes during a slow attach are applied once it completes
  • Fixed a session crash when a tool's result renderer returned a numeric bigint value or plain text instead of a UI element
What's changed
  • Added a live elapsed-time counter to the collapsed tool summary line so long-running tool calls visibly tick instead of looking stuck
  • Added a startup warning for Write(path), NotebookEdit(path), and Glob(path) permission rules — use Edit(path) or Read(path) instead
  • Fixed isolation: 'worktree' subagents being able to run git-mutating commands against the main repo checkout instead of their own isolated worktree
  • Fixed the ultracode keyword opt-in firing on non-human-originated input such as webhook payloads and relayed PR comments
  • Fixed a rendered text fragment leaking into crash telemetry when a UI component returned content outside a styled text element
  • Fixed paste markers leaking into external editors opened from Claude Code, which could appear as stray È/É characters around pasted text
  • Fixed claude attach sometimes failing with "job not found" or "agent is still starting" errors during session transitions — attach now waits for the daemon to settle, and terminal resizes during a slow attach are applied once it completes
  • Fixed a session crash when a tool's result renderer returned a numeric bigint value or plain text instead of a UI element
  • Fixed a hook callback timeout being misreported to the model as a user rejection, which made unattended sessions stop and wait
  • Fixed Claude assuming a cd took effect after its command was moved to the background; the tool result now states the working directory is unchanged
  • Fixed plugin-provided MCP servers being torn down when MCP servers are re-synced mid-session
  • Fixed plan approvals without edits being labeled "(edited by user)" and overwriting the plan file with a stale snapshot
  • Fixed /doctor skipping its auto-mode-default proposal on Bedrock, Vertex, and Foundry, where auto mode no longer needs an opt-in
  • Fixed Grep content mode claiming "No matches found" when paginating past the end of results
  • Fixed unmatched $1/$2 positional placeholders in skills and commands being silently stripped; they are now preserved verbatim
  • Fixed plugin cache writes leaving temp files behind on failure and failing on locked-file renames on Windows and network filesystems
  • Fixed background workers crash-looping when a client resets its connection to the background service
  • Fixed claude agents --effort ultracode not reaching dispatched sessions; the value was silently dropped
  • Fixed pressing ← to open the agents view dropping the task tracker when returning to the session
  • Fixed the agents dashboard retaining pasted images from abandoned reply drafts after their session was deleted
  • Fixed killed background sessions leaving a permanent git worktree lock behind; the periodic sweep now releases locks whose owning process is gone
  • Fixed SDK MCP servers registered via an initialize control request waiting until the next turn to start connecting
  • Fixed returning to the agents view from a session leaving overlapping ghost frames with CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN=1
  • Fixed late-appearing .claude/* symlinks not being reconciled into the sandbox deny-write list
  • Hardened the Agent tool against indirect prompt injection via content a subagent read
  • Improved the Bash/PowerShell tool message when a command hits its timeout and is auto-backgrounded, so the model can distinguish a hang from an explicit background request
  • Improved auto mode: the permission classifier now defaults to Sonnet 5 for external sessions, validated on the session's first request and pinned for the session
  • Improved the bundled dataviz skill's chart color validation with perceptual OKLab color difference and recalibrated color-blindness thresholds
  • Memory writes that leave a MEMORY.md index over its read limit now produce an explicit error instead of silent truncation
  • Screen reader mode now announces permission mode changes aloud when cycling modes with Shift+Tab
  • The agents footer hint now shows how many background agents are waiting on your input, with a brief color emphasis when the count changes
  • Agent view: the session you pressed ← from stays visibly marked even after mouse hover or arrow keys move the selection
  • Fable temporarily shows as unavailable in the advisor picker while a server-side issue causing Fable advisor failures is fixed
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How v2.1.210 went

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